Harsco Industrial C1500H Installation & Owner's Manual page 34

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MACH C2500/C3000/C4000 Boiler Inlet and Outlet Connections
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All water connections should be in compliance with national, state and local code requirements.
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NOTICE! The MACH
Couplings. The MACH
These couplings must be used with the EPDM Victaulic seals. Isolating valves must be installed in both water
connections.
Adapters from Victaulic to NPT are available from Harsco Industrial, Patterson-Kelley.
The bottom rear connection to the boiler is the INLET and must be used for the return from the system.
The top vertical connection to the boiler is the OUTLET and must be connected as the supply to the system.
Piping must be installed such that no piping stresses are transmitted to the boiler. The boiler shall not be used as a
pipe anchor.
NOTICE! Condensate Trap must be piped to drain in accordance with all national, state and local codes. If
installed outdoors and the local climate requires freeze protection, it must be field heat traced.
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C2500/C3000 boilers are furnished with 3" grooved connections and Victaulic Style 75
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C4000 boiler is furnished with 4" grooved connections and Victaulic Style 72 Couplings.
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MACH Gas Fired Boiler
1. Boiler Water supply
2. Boiler Water return
3. Natural Gas and/or
propane inlet
4. Relief valve connection
5. Condensate drain
6. Boiler drain
7. Combustion air inlet
8. Exhaust vent
Note: See boiler label for gas
inlet identification.